Guys.. I'm having probs lately with my Compact Presario CQ40-627TU Laptop PC. When I switch"ON"... 1)and press d 'DEL'key,to start BIOS Utility, I run Startup Test. The memory test is(OK), but when it test my primary hardisk my pc hang at 60% test-in-progress. 2)...BUT without pressing 'DEL', the screen will goes BLACK for 'bout 5-10mins. Then, an error msg pop out.....like this: > Windows failed to start. A recent hardware @ software change might be the problem. > Try.. > 1)Insert UR windows installation disk (WHICH I DON'T HAVE!!)& RESTART ur PC > 2)Choose UR language....(bla...bla...bla) > 3)click "repair UR pc".... > If u don't have d diskk, please contact........ > Status: 0xc000000f > Info: The boot selection failed 'coz a required device is inaccessible. FYI, The OS is Windows 7. So, guys... please help!!! thanx!!!!