My pc won't start and beeps 6 times after installing a new Asus gtx 750 ti

Theo_MIC100

Commendable
Oct 19, 2016
3
0
1,510
I have an old hp xw8400 workstation pc that I bought last Christmas for gaming under a tight budget and I then upgraded the graphics card. This card was a GT 610 and while it was ok it didnt really suit my needs. So earlier today I bought a 2gb 2 fan Asus gtx 750 ti and once I plugged it in it wouldn't turn on and would flash red and beep 6 times which means a GPU fault. I then tried everything to fix it. I updated the BIOS to the most recent thing I could find even though it was December 2010, I tried to take out and reinstall the card and I tried to update drivers. Is there anything else I can do or is it just too old. I have 2 dual core Intel xeons, 32gb ram and an 800W PSU so it can't be power.

Thank you in advance
 

Theo_MIC100

Commendable
Oct 19, 2016
3
0
1,510


No I bought it new from pc world. The 6 pin is connected.
I'm not sure what a graphics adapter is but when I plug in my last card it works