Black screen right after switching on my laptop.

[Jamespotter101]

Hi guys
I have a Lenovo G570. Yesterday, I tried turning on my laptop. Win 10 booted, and then hanged right at the login screen. The cursor wasn't moving and it was like that for a few minutes. Eventually I got fed up and pulled out the battery (a big mistake). Then the screen was black after I switched it on again. Lights were glowing, fan moving but nothing on the screen. I kept it like that for a few minutes. Then, I switched it off by holding the power button, removed battery, connected ac adapter and pressed the power button and it got switched on! It started working normally but then restarted suddenly. But this time, instead of booting all the way to the desktop, it stopped at windows logo and then gave me the blue screen of death. Some system file which I don't remember was 'lost' or had 'an error'. The error was 'SYSTEM SERVICE EXCEPTION' I restarted, This time again it loaded to login screen and then restarted. There was 'winload.exe' now instead of the previous file on the blue screen of death. Again restarted and now it won't show anything. Tried like 50 times already. Lights glowing, fan moving but no display. I guess the windows has been corrupted or something. But how do I access bios now to launch installation cd or to usb boot?
Thank you so much.

EDIT: Reseated RAM, HDD. Still nothing. The led on usb drive not glowing when I plug it in but the dvd is making sounds in it. No idea what to do. Please help.

 

[wpgwpg]

A Windows system file has gotten corrupted. Try pressing F8 about once a second after powering on to boot into Safe Mode. If that works, you can run troubleshooters to hopefully find and fix the corrupt file(s). If that doesn't work, you can run System Restore if you've enabled it, or you can restore from a full system backup if you have one. If not, then it's time to reinstall Windows.

 

[Grobe]

Just a little tip that might prevent you from wasting a lot of time if it turns out being an hardware fault that cause this problem:
Try booting up with any Linux distro (that feature a bootable Live-cd) and just sit and do some basic work like web browsing, drawing, office stuff - just to see if your system seems to work properly.
Because - if it turns out being an hardware fault, it is very likely that other OS won't work either.

And also: many of the live-cd out there contain the tool named Memtest to check if ram is working properly.

 

[Jamespotter101]

Thank you for your replies, guys. But the point is, I CAN NOT access the bios. There's no bios or anything. I'm only getting a black screen when I switch on my pc. And the LED on the usb drive I connect to the laptop does not glow. So I cannot change boot order to select usb boot or anything

Pressing F8 doesn't do anything. Looks like the computer is not taking any input. The only response I'm getting from the computer is that it makes sounds when I put in a dvd. I'm not able to do anything. Is there a way of repairing my windows without having to boot? Using another computer maybe?

 

[Grobe]

Then it is not a Windows problem.

Just a wild guess: try replacing the cmos battery and see if that helps.