How do I add more PC 100/133 Memory ?

[highfiber1]

XP Pro, PIII 733, which uses PC 100/133 RAM -(Compaq custom Presario 7000 series) - I have (1) PC 133 stick, and am trying to use (1) PC100 60MB and (1) PC100 256, in addition to the stock stick that cam with the PC.

I keep getting a memory error, and my system won't recognize the PC100 sticks. The nutty thing is, I had this stuff working before I installed XP Pro.

Is there a Bios or Memory setting somewhere, where I can make my system recognize the PC100? I need more than the 128, and I'm trying to limp along until I can build a better, newer system. That costs $$ though!

What am I doing wrong...or not doing right? Can I use the PC 100 again?

Thanks!

 

[flavallee]

Highfiber1:

You didn't advise the exact model number of your Compaq Presario, except it's a 7000 series. There are numerous model numbers in the 7000 series. Can you be more specific? How many RAM slots does it have?

From what I've read at the Crucial site, if it has 3 RAM slots, it possibly supports a maximum of 768 MB of RAM.

PNY(a well-known maker of RAM modules) advises to use PC100 modules if the processor speed is less than 1 GHz, and to use PC133 modules if the processor speed is more than 1 GHz.

I have a Compaq Presario 5900T with a 733 MHz Pentium III processor. It has 3 RAM slots and supports a maximum of 384 MB of RAM. I use PC100 modules in it.

 

[highfiber1]

Thanks for the quick response Flavallee! I think I know just enough about PC's to really break something. I need help. I have a buddy at work that builds PC's, and I need to give him a break... This site rules...so far

The only model # I can find is this: 7EL1 KMAT CTO - 3 slots for memory, 768 max, 256 module size
mainboard is the Compaq 06BCh
system bios 686S6

 

[flavallee]

If it supports 768 MB of RAM, that means you can install a 256 MB module in each of the 3 slots. If you're using Windows 98/98SE or Windows ME, 384 MB of RAM is plenty. A 128 MB module in all 3 slots will do the trick.