Upgrade Assistance

Good Morning,

I decided to upgrade my computer over Christmas. Its the last upgrade until I decide to buy a new computer. So I planned for it to be maxed out. Problem is when I installed the new RAM it won't boot with the 2 1GB sticks. Each will work individually so we know the RAM itself is good. With both installed I recieve a successful POST test and all RAM is recognized during POST. The screen then goes to an IRQ screen then the system completely stops. Any suggestions are welcome. Below you will find what has been done already.

MB:
Foxconn 650/651M02
Manual Link: http://www.foxconnchannel.com/support/downloads_detail.aspx?ID=en-us0001126

Processor:
Old: 2.5 GHz Pentium 4
New: 3.2 GHz Pentium 4

RAM:
Old
1 512 MB 266 DDR
1 256 MB 266 DDR
New:
2x 1 GB 266 DDR High Density <== will not boot

Will Boot
1x 1 GB 266 DDR High Denisty
1x 512 GB 266 DDR

OS:
Windows XP Pro

 

Did you try both chips of the ram one at a time with the 1x 512 mb 266 DDR ram?