CMOS

Forum discussion tagged with CMOS.
  1. liberty610

    Question New CMOS maybe battery draining fast?

    Hello everyone. I have a Gigabyte X570 xtreme motherboard paired with 64gb of ram, RTX 2080ti, and an AMD 3950x CPU. I also have the latest BIOS version (F38) installed. Recently, I had some weird behavior with my motherboard that lead to the system doing random reboots and not posting...
  2. S

    Question Change from AMD to NVIDIA GPU - No Display

    I swapped my RX 6600 to my friend's 1070Ti, I forgot that I have enabled REBAR in the Bios beforehand for the SAM in AMD GPUs. Now that I plugged in the 1070Ti, it does not display. The 1070Ti was working fine in my friend's system btw. I tried removing the CMOS battery, but still no display...
  3. T

    Question Probably faulty motherboard: bios or board or gfx ?

    I'm having woes with (I think) my Gigabyte Aorus x570 Xtreme (rev 1) motherboard. It's had weeks of not starting, with the q codes making no sense and sending me down false paths (and the manual has a lot of reserved codes but they are happening). At first I thought it was the gfx card but I...
  4. RTX30XX2021

    Question PC boots into BIOS instead of Windows

    Hello IT professionals, I recently was messing around in bios and now got myself a problem (not surprisingly). When I restarted my pc I got a message on screen for a split second saying something about "game boost" and then my display stopped working and remained black even after several...
  5. confusedbeaver

    Question PC turning on and off, cannot boot to BIOS ?

    I'm having the issue mention in this thread i created earlier https://forums.tomshardware.com/threads/pc-wont-turn-on-after-a-lighting-strike-psu-able-to-jumpstart.3835290/ i try to remove the CMOS battery, since that the only thing i haven't try to unplug, after i plug it back in, my pc able...
  6. C

    Question Pc wont start after oc

    specs: MSI MEG B550 Unify R5 5600x Aorus 1080ti Cougar GX 800w G.Skill Ripjaws V 32gb 3200 Q: I tried oc cpu and ram. After restart my pc wont boot, all coolers working but no image at all. Debug hex okay then start repeating 32-37 hex, ez degub led shows vga and boot. I’ve tried clearing...
  7. R

    Question HP laptop BIOS error 601 and 502 ?

    Hi, i have an HP Pavilion 15-dk0xxx Gaming Laptop and I noticed that recently, that when i unplugged my laptop it shut itself off as soon as the warning to plug it for the battery instead of waiting for a minute before shutting itself off (which was the time it used to take before), so i knew...
  8. darnix7707

    Question Motherboard won't boot to bios until I reset CMOS.

    My mobo is a asrock h61-m vs3 DDR3 mobo and won't bootup to the bios until I remove CMOS battery and pop it back in(sometimes even reset it using the jumper on the mobo). Also sometimes won't boot until both keyboard and mouse is plugged in. Seems like this occurs only when power is completely...
  9. bitsibx

    Question BIOS doesn't save - I think I tried eveything ?

    motherboard is : https://www.gigabyte.com/Motherboard/GA-P61A-D3-rev-30#ov CPU : Core i7 2600 RAM : 16GB DDR3 This motherboard lost BIOS settings when power was disconnected. As you can see this motherboard has dual bios but I'm just using one OS. what i did to try and fix : change cmos...
  10. rodrix

    Question How to fix no boot and no video on a PC? I have tried many solutions and none of them have worked. Please read the description for alot of more info.

    TLDR: No Beep and No Video, most possible faulty parts are CPU, RAM, MOBO, PSU. Issue appeared after rearranging SSD and HDD SATA connectors, and reseating GPU. Please read full description for entire story and details. Thank you very much. I recently got an Acer Veriton M4620G, and a GTX 950...
  11. E

    Question Does clearing cmos delete all saved profiles in the bios ?

    Hi, my mobo -gigabyte z87x-ud3h. does clearing cmos deletes all saved profiles in bios?
  12. S

    Question CMOS Battery question

    So for some reason or other, my motherboard seems to not have a cmos battery present, does that mean that I'm unable to save bios settings at all, or does it mean they will be reset every time there is no power in the mobo?
  13. K

    Question PC powers on only after 20 minutes delay after wall switch is turned on

    Hello, everyone! I've been experiencing a peculiar and frustrating issue with my office PC lately and I'm at my wits' end trying to resolve it. PC config: AMD 3600xt (stock fan) Gigabyte B550 GAMING X V2 (rev. 1.0) motherboard Corsair Vengeance LPX 16GB (1x16GB) DDR4 3200MHZ x3 [48GB in total)...
  14. D

    Question New PC posted once, now fails to boot with amber VGA LED on motherboard.

    Just finished building my PC. When I had everything tucked away, I powered it on and made it to the BIOS screen. I powered it off, cleaned up the table a bit, plugged in my mouse, keyboard, and USB to update the BIOS, powered it on and now I get the amber VGA debug LED on the motherboard. All...
  15. EduardoOliveiraF

    Question Motherboard won't turn on after undervolting through BIOS

    So recently my "I7-13700KF" processor was heating up a lot, especially here in my city which today is reaching 42°c, so I researched if there was any way to cool down my processor, the first topics that appeared were about Undervolting, so there I went to research about it and followed a...
  16. H

    Question No display on boot, fixes after CMOS batter removed and put back in but have to repeat this every time I boot

    A couple days ago I reset my pcs bios settings to default, now every time it boots there's no display. I take the CMOS battery out and put It back in and it boots fine, I have to do this every time I boot it, I imagine there's a bios setting I need to change but can't find anything.
  17. Dexxly_uk

    Question Possibly a dead CMOS battery ?

    Sometimes when I go to sleep I turn the PSU switch off overnight and when I go and turn the pc back on the next day the mobo will light up but the pc won’t power on for a few hours and when it does turn back on the clock will be like 6 hours behind. I don’t think it’s the PSU because it's only 3...
  18. T

    Question BIOS keeps resetting when PSU is switched off ?

    Any changes I make to the BIOS will stay until I shut the PSU off, after which all the settings will go back to default. This is a particular problem with my RAM speeds. I already replaced the CMOS battery and that fixed nothing (I forgot to unplug the PC when I did this, although the PSU...
  19. rakinar2

    Question BIOS won't remember any setting or boot options

    I have a weird problem with my Dell OptiPlex 7080 Tower. Each time I power it off (unplug the power cable for like an hour or so), the BIOS resets every setting to default. E.g. it forgets every boot option (e.g. Windows Boot Manager, Ubuntu) my system has. I have to manually add those in order...
  20. P

    Question Power on but no display

    PC specs: MOBO: MSI B350 CPU: R5 5600 RAM: 2*8gb GPU: RTX 2060 Contex: Every time I go way for some days, I am used to disconnect the desktop from the power. I have never had problems, except the BIOS reset every time I recoconnect the pc to the power (probably due to discharged CMOS battery)...
  21. B

    Question Tiny UEFI change permanently destroys PC

    Asus 2012 UEFI 16GBDDR3 Laptop N56V(z) Veracrypt version from april 2023 Win10 22H2 Pro Encrypted C Windows system partition, then deleted all partitions on disk, then in UEFI, removed Veracrypt in boot menu. It never booted since then. It is always black screen, 100% black, never any text of...
  22. Ace_on_pc

    Question Enabled csm and secure boot at the same time, now the pc won't post.

    So, my friend was trying to play valorant and as he is on w11 he needs secureboot on and it wasn't working so I thought he should try enabling csm as I wasn't sure what it was but secure boot was enabled. After doing some research it seems like that was a bad idea as they are parallel settings...
  23. S

    Question PC not booting/doesn't POST/Black screen unless CMOS is reset in which case it only boots into BIOS ?

    Hi, I really hope someone here can assist with this as I have tried various things and my knowledge has hit a wall and I have reached the limits of my experience. I scoured the internet for fixes to my problem but was unsuccessful which is why I am making this thread as a last cry for help. I...
  24. N

    [SOLVED] PC beeps (4beeps-4beeps-4beeps-4beeps) on shutdown and doesnt turns off

    I turned on my PC after a very long time (3+ yrs). Its a Lenovo thinkcentre M58 and as the title says it doesnt wants to turn off normally. On shutdown, it beeps in the abovementioned order and then the fan keeps running forever. There is no HDD activity and no display output. I have to turn it...
  25. L

    Question PC wont boot, tried everything I know and read

    I do a lot with computers, I just cant figure this issue out, its driving me nuts. SPECS: Processor: i7-3930k Motherboard: Gigabyte GA-X79s-up5 PSU: (new) EVGA 650W Bronze (previously had 500w chinese PSU) Memory: 16gb HyperX Fury Blue 1333Mhz (4x4) GPU: MSI GeForce GTX 970 GAMING 4G STORY...
  26. 1Reality1

    [SOLVED] Stuck on BIOS Screen - Won't Boot to OS

    Monitor went into "Power Saving Mode" while I was sitting at the keyboard and actively using the PC. Shortly before the happened, there was screen flickering and going black - and it came back from that a few times; until it didn't anymore. After trying a couple things, I reset the CMOS and...
  27. N

    Question Pc Screen with no signals after Secure Boot and TPM turned on

    Good Days to you all! Thank you for taking your time to read this thread. I seem to have an issue with my computer. Recently black friday sales i got myself an Aorus x570s Pro Ax with Ryzen 9 5900x and I was updating and got the option of getting a free upgrade from windows 10 to 11 and i was...
  28. J

    Question PC Doesn't turn on until I reset CMOS

    Basically, my issue is, I'll be using my pc for a few weeks/months no problems at all, no signs of something being wrong with my system in the slightest. Then randomly one day I go to power my PC up like on any other day to come and find out it won't power on. My motherboard shows signs of life...
  29. A

    Question PC getting into boot loop after Bios logo

    I'm using Ryzen 7 2700 along with B450 Aorus Elite motherboard. 16 Gb ram and Rtx 3060. The problem is pc getting into Boot loop after bios logo. I can access the Bios anytime but it gets reset all the time. So i cannot change and setting in Bios. I reset Cmos using the jumper snd changed Cmos...
  30. MegaProject

    Question Gigabyte b450 ds3h stuck I'm bootloop after enabling secure boot

    Hi, Been trying to install windows 10 on my m.2 SSD instead of my regular 126gb SSD. After enabling secure boot in bios, it just gets stuck in a bootloop, the motherboard doesn't even power the keyboard. Have tried to CMOS clear it but with no luck. Been running the same setup almost 2 years...
  31. A

    Question Pc seemingly randomly Boots up very long and clears CMOS.

    Hello everybody, I hope you can provide some Insight into my newfound Problem. I recently changed my Case, since my old one started to break a bit (1 fan had a broken bearing and the others certainly werent in much better shape). After said change i first had the Issue mentioned in the Title...
  32. Mer08

    Question Computer not starting after saving any change to BIOS settings.

    Hello. I have a QDI Kudoz 7x/400a mobo and the CMOS seems to have some issues. Whenever I change any settings (I want to change boot order) and press F10 to save, the computer resets and after the boot logo only a flashing cursor at the top left corner shows up instead of the normal Detecting...
  33. RajTheGeek

    Question Help!! No display output after upgrading GPU

    So I just upgraded from GTX 1060 to Asus RTX 2060 12 GB. As soon as I did it I played game for few mins. Everything was fine because I had enabled Vsync so that was capping at 60 fps. As soon as I disabled it to check how further it goes. After 5 mins game got crashed, closed and system got...
  34. M

    Question Intermittent Power Cycling

    Good afternoon y'all, Specs: i7-11700k ASUS PRIME Z590-A Corsair Vengeance LPX 3000 16GB MSI Ventus 2x RTX3070 WD blue NVME SSD Corsair CX750 PSU Windows 10 Recently built this computer for a friend, on build turned on XMP and UEFI compatibility mode in bios and let the remaining Asus...
  35. D

    Question 3080 ti black screen, fans work, does not appear in device manager

    Just purchased a new EVGA 3080 ti XC3 to replace my 2080. On boot: black screen (monitor says no input), fans and leds turn on, gpu not detected in device manager, vga light flashed on motherboard. Going back to old 2080 everything works fine. Other specs: Ryzen 7 3700x NZXT B550 motherboard...
  36. OMGSam

    Question Laptop would not start on battery (CMOS or Laptop Battery)

    If CMOS or Laptop batteries are plugged in, it wont even boot/POST. it will show its charging but wont turn on. even the power button would be off. Also, it has to be started in a specific way. I have to unplug it and wait for the charge to discharge. The plug the charge in (without switching on...
  37. lxire

    Question Is my motherboard bricked?

    I spent all day yesterday trying to update my bios. I have definitely made things worse. My motherboard is the B550 A PRO, my CPU is the Ryzen 9 5900x, the rest of my parts are here: https://pcpartpicker.com/list/dj4kW4 I have installed everything from the list, I am going to transfer my GPU...
  38. Joa745

    Question My pc won't boot unless I clear the cmos (Aorus b450 elite)

    Hello everyone. I bought my pc 1 year ago, and it's been working perfectly until a few weeks ago when it started having problems. When I press the switch the fans spin but the monitor doesn't recive any signal, the rbg don't turn on either and the cpu light stays on red. Later I found out that...
  39. OMGiTxREALHASSAN

    Question PC not starting.

    PC doesn't start when I press the power button, No fans nothing, not even PSU fans. I was searching online and I found out that it could be solved if I reset CMOS. But it didn't work maybe because I didn't do it correctly. There are 4-pins above where CLR-CMOS is written on my MOBO I have a...
  40. C

    Question Pressing "Clear CMOS" button leads to "inaccessible boot device" error, and eventually error 0xc00000f upon trying to boot from boot manager ?

    Out of sheer stupidity and ignorance, I managed to screw up my PC. No matter what I do, I can’t boot it. I hope I can get into Windows with my files intact because I am quite stressed right now. specs: Core I7-8700 GTX-1080 16 Gigs of RAM 500 GB Samsung SSD (which has the OS) And a DVD drive...