cant boot (no POST) after upgrading RAM

[iantrickett71]

Hi. I have a Viglen 625M Mboard that originally came with 4Gb RAM. Manufacturer states 8Gb max SDRAM. 1st I went to Currys and the resident PC expert recommended some - I purchased 2 x 4Gb modules rated at 1600Mhz (I explained that the system only supports upto 1333Mhz (overclocked) but after installing the pc refused to boot up no matter what I tried. It wont even go through the POST test. tried disconnecting usb HD's and reverted to on board graphics. Still no joy. Returned RAM. Then today I went to a PC repair shop, explained what had occurred and using the "Crucial" web site came up with 2 x 4Gb 1066Mhz Ram modules. Well guess what? Exactly the same!! Ive tried resetting the bios. looked for any options within bios that would make a difference. Am now pulling what little hair I have left out. Has anyone got any suggestions as to how to resolve. (I have noticed the board has switches on it for overclocking (default, 200-266Mhz, 200-333 and 266-333), would setting these differently affect the systems ability to see the RAM? The new modules are the following specs - 4Gb DDR3L -1600 UDIMM 1.35V CL11 (does the L indicate Low power? If so will reducing the SDRAM voltage in the bios to lower than 1.35V have any effect??
Many thanks in advance - IAN

 

[SkyBill40]

Here's the spec sheet for your board:

https://www.viglen.co.uk/viglen/Attachments/products/Vig625M_motherboard.pdf

At this point, I'd suggest you pull the CMOS battery, let it sit for a while, and then reinsert it. Try to boot into your BIOS and make sure all of your settings are stock. Don't bother fiddling with any OC settings at this point as we just need to see if it'll get back to booting.

As for that 1600Mhz RAM you bought, I'd suggest you take that back as it's not going to work for your rig.

 

[iantrickett71]

Here's the spec sheet for your board:

https://www.viglen.co.uk/viglen/Attachments/products/Vig625M_motherboard.pdf

At this point, I'd suggest you pull the CMOS battery, let it sit for a while, and then reinsert it. Try to boot into your BIOS and make sure all of your settings are stock. Don't bother fiddling with any OC settings at this point as we just need to see if it'll get back to booting.

As for that 1600Mhz RAM you bought, I'd suggest you take that back as it's not going to work for your rig.

Thanks Bill - Ill pull the CR 2032 now and try a reboot (yes I already got a refund for the higher freq sticks) . Ive spotted an L after the DDR3 on the label of the memory - does this indicate LOW voltage - do I need to adjust the voltage down in the bios?

 

[SkyBill40]

The voltage on the new sticks is 1.35v, so you'll need to adjust your voltage in the BIOS to that else they won't have sufficient power to run properly. You may be able to undervolt slightly, but I wouldn't recommend it. What is the exact product ID for those sticks? It should say on the sticker.

 

[iantrickett71]

Here's the spec sheet for your board:

https://www.viglen.co.uk/viglen/Attachments/products/Vig625M_motherboard.pdf

At this point, I'd suggest you pull the CMOS battery, let it sit for a while, and then reinsert it. Try to boot into your BIOS and make sure all of your settings are stock. Don't bother fiddling with any OC settings at this point as we just need to see if it'll get back to booting.

As for that 1600Mhz RAM you bought, I'd suggest you take that back as it's not going to work for your rig.

The voltage on the new sticks is 1.35v, so you'll need to adjust your voltage in the BIOS to that else they won't have sufficient power to run properly. You may be able to undervolt slightly, but I wouldn't recommend it. What is the exact product ID for those sticks? It should say on the sticker.

The new modules are the following specs - 4Gb DDR3L -1600 UDIMM 1.35V CL11
Appreciate your time on this Bill

 

[SkyBill40]

No. I meant the actual product ID from the RAM.

 

[iantrickett71]

I think this is it - CT51264BD160BJ.M8FN ??
OTHER NUMBERS ON THE LABEL ARE 301697 & E03ED9E7 & ON THE BACK 1 LABEL WITH BV11173.KL
I removed battery (about 30 mins) still wont boot. tried adjusting dram voltage to 1.35 (auto was setting it to 1.5 btw) but again no boot or POST (Ive also tried 1 stick at a time in both slots but still no go). Frustrating..

 

[iantrickett71]

Extra info that may help - the tool CPU-Z's SPD tab wont populate with any info on either slot?? (odd).
DC mode of RAM is Symmetric
Current DRAM freq on the 2GBx2 sticks that are in the PC now are running at 599.3Mhz FSB : DRAM = 1:2
CL, tRCD & tRP are all at 7 clocks wityh tRAS at 20 and tRFC at 60 with CR@2T

 

[SkyBill40]

Weird that it won't even try to POST. I'm starting to wonder (however unlikely it may be) that your mobo might be hosed. Your PSU is working properly, yes?

 

[iantrickett71]

as far as I can tell PSU seems OK (dont have a V meter so cant check outputs)
Any idea why when set to auto the DRAM voltage sets higher than the RAM requires? i tried lowering it to just under 1.35 but didnt seem to make any difference
system doesnt beep or anything fans all work, usb devices (if connected) all power up ok

 

[SkyBill40]

That's odd for sure. Pull your discreet GPU and try the onboard video. If that doesn't work, reinstall your GPU, swap your cable connection, and then try again. As for the auto on the voltage going higher than what the RAM requires, that's a tough one. Did you still have your original RAM to put back in and see if that makes any difference?

 

[Calvin7]

The new modules you listed are not compatible. G41 Chipset uses low-density memory which has been discontinued by most memory manufacturers. 1600MHz is the wrong speed too.

2x 4GB DDR3 1066MHz
https://www.ebay.com/itm/8GB-2x-4GB-DDR3-1066MHz-PC3-8500-DESKTOP-Memory-Non-ECC-1066-Low-Density-RAM-8G-/331724485983

 

[iantrickett71]

The new modules you listed are not compatible. G41 Chipset uses low-density memory which has been discontinued by most memory manufacturers. 1600MHz is the wrong speed too.

2x 4GB DDR3 1066MHz
https://www.ebay.com/itm/8GB-2x-4GB-DDR3-1066MHz-PC3-8500-DESKTOP-Memory-Non-ECC-1066-Low-Density-RAM-8G-/331724485983

Hi Calvin - Thanks for your answer - The ram on ebay should work then? Hopefully the store will take the incorrect RAM back off me