Computer was on all night, turned on now with speaker beeping.

guyferrari

Reputable
Jun 28, 2016
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4,510
Hello,

Last night I accidentally fell asleep with my computer still on. I turned it off when I woke up this morning. I'm trying to turn it on now and the motherboard speaker begins beeping. Its 3 long beeps and then either then nothing happens.

Here's my setup:

CPU: Intel - Core i5-6600K
Motherboard: MSI - Z170A GAMING M5
Graphics Card: GeForce GTX 960
RAM: Avexir - Core Series 8GB
HDD: Western Digital - BLACK SERIES 1TB
PSU: EVGA 500W

I have Click Bios 5

If anyone knows what the problem could be, please let me know. If you need to ask me for more details, I'll be happy to give them.
 
Before you blame yourself for "accidentally" forgetting your computer on, I leave my main PC on pretty close to 24/7 and it is still working perfectly fine 5.5 years later. Your much newer PC suddenly failing to boot due to what appears to be a memory error after forgetting to turn it off overnight is purely coincidental - PCs shouldn't fail specifically for that reason.

If your 8GB is split between two DIMMs, try each DIMM separately to see if you can get your PC to boot. If you have a separate PC, you may want to try putting memtest86 on a thumb-drive and letting it run for 4+ passes on each DIMM to check them for easily detectable problems. If you get errors on both DIMMs and different slots, try to look for a bit pattern either in the errored data or errored addresses. If all errors concern specific bits at specific addresses, then you have a bad memory cell. If you get errors on both DIMMs with a specific address or specific data bit at different addresses, then there is a bad contact between the DIMM slot and CPU that is causing address or data errors, may want to try re-seating the CPU. If those errors only occur on a specific DIMM slot, then you may have a bad slot on your motherboard.
 


So I tried turning my PC on after about 45 minutes and it now booted fine. If this happens again, I'll try a different DIMM slot, but thank you!

EDIT: Beeping happened again, I'll give it a shot.
 


Tried. The RAM usually glows but didn't, and it came out of the DIMM slot just by pulling it a little, even with the tabs closed.
 

DIMM slots are usually pretty tight, often scary tight when pushing DIMMs in. Sounds like it wasn't fully inserted.
 


It worked! Thank you so much. Now I just have to figure out what the original problem was. Maybe DIMM4 just stopped working, not sure.