Samsung NP300E5E: Looped Reset on Power On After BIOS Changes - Win8 to Win7 Boot Options

Hello!
I tried to reinstall win8 to win7. After setting in the bios the possibility of booting other media, i.e. turning off these locks, after rebooting, the laptop turns on, the Samsung logo appears with a bar at the bottom F2 BIOS F4 BOOT something there and after 2 seconds there is a restart with such a characteristic tick. Everything loops and the same thing happens.

Bios restart (30 minutes without battery) did not help.

Somewhere I found that the switch may be broken, but replacing it did not help. I have no ideas what to do because the warranty has already expired and I would like to try to fix it myself.

For reprogramming the BIOS chip in an external programmer.

It worked properly on the previous system?

On Windows8 it worked without any problems. It's just that this system is still there because I haven't had time to install anything yet.

Diegoxol wrote:

on win8 it worked without a problem. It's just that this system is still there because I haven't had time to install anything yet

Then reinstall it.

but I can't because the computer keeps resetting

After removing the drive, it also resets?

Yes. It also restarts without the disk.

Reset CMOS to start with.

I just wrote that I was doing a BIOS reset by removing the battery for 30 minutes. Unless there is some other way to do it?

In post # 2, I wrote what to do first.

I understand that I will not do it at home and I have to go to a service? I read that you need a programmer that is not cheap

That's right.

Diegoxol wrote:

I understand that I will not do it at home and I have to go to a service?

Rather.

Diegoxol wrote:

I read that you need a programmer that is not cheap

You need a programmer, adapter, batch and soldering skills.

Do you know what the price of such a service is?

Diegoxol wrote:

Do you know what the price of such a service is?

Probably 150 PLN in Wawa.