Are memory sticks from a compaq pressario 7922 compatiable with my compaq preasrio sr2150nx ?

try this link.

| compaq presario sr2150nx sm bus controller drivers windows xp | CD Disk Download | User Guides |

hope this helps

of course. maximize your computer at its capability. its you whose gonna use it anyway. technology was built and upgrades were made available to make your work a lot easier. why stick to just okay when you can get the best. Use the maximum memory for your pc and be sure to consider your operating system maximum requirement too.

You can download Compaq Sound Driver from this site. Compaq Sound Driver.

Remove the Old memory and see if the system reconizes it, if yes the old is not compatable together.
If no the new memory is not compatable with your system.

sir maine february 2009 me pc kharida tha aur mujhe abhi tak apna gift nahi mila. mere computer ki details hai: Rekha khare COMPAQ PREASRIO SG3640 mera file no.101366 hai

try upgrade your bios

here is the link for your bios upgrade:
http://h10025.www1.hp.com/ewfrf/wc/softwareDownloadIndex?softwareitem=pv-52015-2&lc=en&cc=ca&dlc=en&product=3339274&os=2093&lang=en

by the way the 512 MB ram is ddr400

Here are your memeopry specs from HP

Memory Single-channel memory architecture
2 x 240-pin DIMM sockets
Supports PC2-3200 (400 MHz), PC-4200 (533 MHz) and PC2-5300 (667 MHz) DDR2 DIMMs
non-ECC memory only, unbuffered
Maximum HP/Compaq approved memory is 2 GB


Crucial states

Each memory slot can hold DDR2 PC2-4200,DDR2 PC2-5300 with a maximum of 1GB per slot.

how to increase the performance of my PC?
would you give me the recommended brands of motherboard
that economic but good in quakity.

how to run turbo c in full screen mode on vista operating system.
when i am running turbo c it's gives  a message that vista not support full screen. what should i do please suggest me.

To Be pricise ...there is no hardware problem.
The problem can be two.

1.Your computer supports max of 1.5 GB RAM.....For this check with other vendors too.

2.You have to update your BIOS.

If you can provide me the motherboard no and details i can clarify more on it

Yes, you should be able to. Here are the links for the 32-bit and 64-bit versions of Windows Vista.

32-Bit

64-Bit