Computer not booting, powers on and fans spin but no post beep or signal to monitor.

Geiokami

Reputable
Jul 26, 2015
1
0
4,510
Computer not booting, powers on, fans spin, leds turn on but no post beep or signal to the monitor. i have replaced the ram and GPU so far, but that hasnt fixed it. it had been doing this for months and sometimes fully booting but if i ran anything too graphics intense the monitor would just go to sleep mode saying theres no signal. now it wont boot at all. sometimes it powers on for a brief second then shuts back off.

Alienware X51 R2
i5-2320
8gb ram
GTX555 replaced with GTX750 ti
330W brick powersupply
2tb HDD