I am facing this problem from one week. My system was working fine from 2 year before this problem. One day while i was working on my desktop pc a bluescreen error occured and from that time system is refuses to start. Only blank screen i have find...No bios at start....Cpu fan and graphics card fans are working fine. Seems all componets are working fine. I tried to check monitor on other cpu and monitor working fine. I also tried inbuilt graphics card but no advantage. So i decide to take it to repairing shop. After checking he check with another RAM and voila... all things are work. I think it is a ram problem and buy a 1 gb hynet ddr2 ram in my home... But same problem is again. "No display and no bios." please suggest me is this ram is also faulty? One more thing i want to know if Ram is currupted, BIOS screen should comes up or not? Please help me here.