CMOS checksum error - Defaults Loaded

[MichaelSimpson7]

So I know you shouldn't do this (and I'm gonna stop from now on) but I've been shutting down my PC by holding the power button and not shutting it down properly - and I think this is the reason for my problem.

A few days ago I started up my computer and then after I had been on the internet for a while it just rebooted itself. So I kept starting it up then when everything had loaded it just kept rebooting.

Now it doesn't even load up it goes to a black screen that says something about CMOS checksum error - Defaults Loaded. I've searched for other people with this problem and the responses tend to be to do something with the BIOS (sorry, I'm not very technical. I don't even know what the BIOS are) but my problem is my keyboard has now become unresponsive that I can't get it into anywhere to change the settings. When I start up all the lights come on for a second (num lock, caps lock and scroll lock) but then go off and my keyboard becomes unresponsive.

Then when I try to reboot the computer from the power button it doesn't even start up now! (It's just going from bad to worse) Like it turns on (I think it's the fan that makes a noise?) but nothing happens the screens black, it doesn't even make that beeping noise it usually does when it's just starting to start up. I have to wait for a while (like a good few hours or even a day) before I can try and start it up again and it will go to the CMOS checksum error screen.

Please help! And, if possible, please put things as simply as possible as (maybe you can tell) I'm not very technical.

[Mender]

Shutting down by simply holding the power button in is definitely not recommended. Windows has a shut down procedure for a reason; it has to finalise any data transferred from virtual memory to the hard drive, and memory pointers, which are stored as temp files on the hard drive have to be reset. If you don't use the shutdown procedure, you seriously risk corrupting Windows to the point where a fresh installation of Windows will be required.

Your cmos corruption problem may be due to a flat cmos battery. This is most probably a CR2032 which looks like this and can be found on the mainboard sitting in a socket. You will need to carefully lift this battery out of the holder, and fit a new one making sure you put it in the right way up.

Then, when you switch on, you should be prompted to enter the BIOS. You should go into the BIOS, and as you don't know much about it, simply select the "save settings" option. Now see if it boots into Windows. If not, you may well have to reinstall Windows fresh, and in future, use the shut down procedure.