Desktops & All-In-Ones

[ddfleming]

Hello All!

I'm attempting to increase Ram from 1 2gb card to 2 2gb cards. Purchased a set of matching cards PC3-8500 DDr3-1066 240 PIN sdram DIMM...each having 2gb each. I purchased a matching set after reading of possible compatibility issues if adding 1 card to an existing card. 

When the cards are installed, correctly seated and snapped in, the system will not boot. It does not recognize the cards. ?? System does power on, fan comes on, one audible beep and that's it. ;( 

After removing the new card set and reinstalling the old single card, booting with no problems.

I am told that I need to install a BIOS update. As i understand~updating BIOS unnecessarily can be damaging. Did a search on the Acer website for a BIOS update that would address the issue and I didn't see one. 

Maybe I'm reading it wrong.

Here are my system specifics:

Acer Veriton x 275-UD5800W

snid 12402649892

Please let me know if you need further information. 

Thanks in advance for your help!!

Dana

[IronFly]

Have you tried with a new single stick of ram, instead of mounting both?

the system is able to boot?

I would try to reset the CMOS, when you insert 2 new ram sticks.

to do that you need to tak off the power cord and take off the Motherboard battery too for 2-3 minutes at least (probably there is also a jumper in the motherboard to reset the CMOS but i can't see on web pictures).

then replace the battery, connect the power cord and boot your system to BIOS.

[ddfleming]

Hello Iron Fly!

Thanks for your fast response.

Yes, have tried a single new stick without boot success. Sorry, I should have included that in my initial post.

Will attempt the CMOS reset and report back.

Thanks bunches!

[ddfleming]

Hello again.

My motherboard has both clr CMOS and bios wp jumpers.
Bios WP is set to "write protect"
Clr cmos jumper is set to "normal/default"

I unplugged the motherboard battery and reset the CMOS jumper by placing the jumper on the opposite 2 pins which are "clear CMOS".
Plugged it all back in. Pressed power to flash it.
Unplugged it all again. Replaced the CMOS jumper on the "normal/default" pins.
Plugged it all back in. Drumroll....pressed the on button and no boot!!

Sooooo should I have done the same with the bios WP jumper?

[ddfleming]

Put the WP bios jumper on "normal/default"
Cleared the CMOS again.
Plugged it all back in. And still no boot with the new cards.

Put the old card in. We are booting and into the set up bios screens.

Any other ideas- other than throwing these cards in the garbage can?'!

Thanks for all of your help.

[IronFly]

New ram voltage and timings compared to the old?

[ddfleming]

Good Morning!

Voltage for old and new is 1.5v

Timings for old is:

 #1 6-6-6-17-23

#2 7-7-7-20-27

#3 8-8-8-22-30

#4 9-9-9-24-33

this info was gathered using cpu-z. 

i don't have the timings for the new sticks. 

did notice one difference between the new and old though:

old max bandwidth: pc3-10700 (667mhz)

new sticks: pc3-8500 (1066mhz)

[laurent_14]

Hello Dana,

Your original memory stick is: - MEM 2GB DDR3 1333 UNB-DIMM -

In single channel, you find 667MHz (1333/2).

[ddfleming]

Hi Laurent_14

Thanks for the explaination. All of the previous post's info was gathered using cpu-z as I couldn't find it on my own.

I updated my Bios to the latest version P-01.C2.  Still no luck with the new sticks of ram.

Looks like I'm returning them for a replacement set. 

Thanks for all of your help!