[virgamanda]

I have an old compaq 5002us desktop that has an 800mhz duron cpu, I bought a 1.3 processor. I took out the old one and put in the 1.3 and the computer runs but nothing ever comes up on the screen. I put the old one back in and it works fine. they look identical and all the pins are the same, why will it not work?

 

[Tyree]

The CPU is probably not compatible with the Mobo/Bios.
OEM PC's use Mobo/Bios made for them and it can be very difficult to determine what CPU's are/are not compatible. Thge PC manufacturer is the most reliable source for that info.

 

[Hotlynx16]

Found this on another web site :compaq 5002us Socket A - 200 MHz system bus
VIA KT133 Chipset
Maximum Supported Processor - AMD Athlon TBird [email protected]
Three Total DIMM Slots Upgradable To 768 MB
Integrated Savage4 AGP Graphics
SoundMax® Integrated Digital Audio (AD1881)
AGP 4X 2.0 Slot
3 PCI slots
An Athlon was better than the Duron,you can pick one up on Ebay
I saw a bios update on the hp site but it only shows up if you select win 2000 or ME Software & Driver Downloads Compaq Presario 5002US Desktop PC - HP Customer Care (United States - English)