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Tom's Hardware > Forum > Motherboards & Memory > Elitegroup > Memory upgrade trashes L7VMM2 board

Memory upgrade trashes L7VMM2 board

Forum Motherboards & Memory : Elitegroup Memory upgrade trashes L7VMM2 board

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ajardine   09-15-2011 at 02:52:55 AM

Hello,
Trying to wring the last life out of an old PC with a L7VMM2 motherboard. had 512M of RAM installed, 2X 256M. One was oem that came with the box, the other was another make, but they worked OK together. I popped one out and put in a 1G Corsair that should have worked. On boot up, system just beeps slowly, over and over again. Nothing to the Monitor. Here's the weird part - I take the new 1G out and put the 256 back in and it still just beeps away! Cleared, the CMOS, even pulled and replaced the CMOS battery. Nothing returns the system to the original working state. Anyone know a trick I don't? Just like to get a few more years out of this dinosaur...

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master ujjal   09-21-2011 at 06:54:01 PM

Dear friend ,
it looks your system have problem in its RAM slots.so kindly download the service mannual,after it try to fix first comptibility issue, because wrong type RAM may damaged your motherboard. if y find difficulties then mail ---ujjal.mandal88@gmail.com


Message edited by master ujjal on 09-21-2011 at 06:56:49 PM
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ko888   09-21-2011 at 08:00:44 PM

Was the AC power cord unplugged from the power supply before you removed or inserted any memory modules?

What is the exact Corsair model number of the new RAM module?

Message quoted 1 times
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ajardine   09-28-2011 at 03:14:05 PM

ko888 wrote :

Was the AC power cord unplugged from the power supply before you removed or inserted any memory modules?

What is the exact Corsair model number of the new RAM module?




I left the power supply plugged in so the case would be grounded. After it started beeping, I believe I also tried inserting it with the power supply unplugged.

Recently took the CMOS battery out over night and took out and reinstalled the CPU - now it doesn't even beep! Afraid it is very dead now.

The memory I was trying to install was VS1GB400C3

Reply to ajardine
ko888   09-28-2011 at 06:53:03 PM

Was the power supply's power switch turned off when you installed the new memory modules for the first time?

If the power supply's power switch was still in the ON position there is still +5 Volts (a.k.a. +5VSB or +5V standby) being supplied to the motherboard. If it's a half decent motherboard there would be an +5VSB LED to indicate that the motherboard is still receiving power.

Memory modules should not be removed or installed while the motherboard is still receiving +5VSB. That is why it is recommended that the AC power cord be unplugged beforehand. Some have learned this the hard way when their new memory modules were destroyed.

Message quoted 2 times
Reply to ko888
ajardine   10-03-2011 at 02:03:26 AM

ko888 wrote :

Was the power supply's power switch turned off when you installed the new memory modules for the first time?

If the power supply's power switch was still in the ON position there is still +5 Volts (a.k.a. +5VSB or +5V standby) being supplied to the motherboard. If it's a half decent motherboard there would be an +5VSB LED to indicate that the motherboard is still receiving power.

Memory modules should not be removed or installed while the motherboard is still receiving +5VSB. That is why it is recommended that the AC power cord be unplugged beforehand. Some have learned this the hard way when their new memory modules were destroyed.



Well, that could be the issue - unfortunately it is a pretty poor motherboard, so no LED light showing whether or not there is power to the board. I've ordered a board to replace this one, and will be sure to unplug the power supply before trying to install the RAM.

Thanks for the hint!

Reply to ajardine
ajardine   10-03-2011 at 02:03:27 AM

ko888 wrote :

Was the power supply's power switch turned off when you installed the new memory modules for the first time?

If the power supply's power switch was still in the ON position there is still +5 Volts (a.k.a. +5VSB or +5V standby) being supplied to the motherboard. If it's a half decent motherboard there would be an +5VSB LED to indicate that the motherboard is still receiving power.

Memory modules should not be removed or installed while the motherboard is still receiving +5VSB. That is why it is recommended that the AC power cord be unplugged beforehand. Some have learned this the hard way when their new memory modules were destroyed.



Well, that could be the issue - unfortunately it is a pretty poor motherboard, so no LED light showing whether or not there is power to the board. I've ordered a board to replace this one, and will be sure to unplug the power supply before trying to install the RAM.

Thanks for the hint!

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