Windows 10: My friends from work broke into my computer, how did they do it?

My friends from work broke into my computer whilst in the Christmas Holiday and changed some things in gpedit which in the meantime I changed back. I'm not part of a domain and they didn't know my password, but I feel like they bypassed the security of my computer somehow possibly a USB or .... something. I got to the system logs of the day they've done it but I can't tell for sure what happened. We work in IT so I'm not upset, I'm just trying to figure out what happened and see if I prevent it in the future. Would it be safe to share the system logs from that they here?

:)

 

Building a computer for a friend

Any reason for listing the 3820? Socket 2011 is total overkill for what your looking for. Socket AM3+ would be more appropriate.

My build suggestion, just pick a case your friend likes the looks of. http://pcpartpicker.com/p/17UJv

 

Update Broke Computer Need Help!

Windows 10 Upgrade
According to this list, your PC isn't on Acer's approved list for Win 10. Could you check that?

This is an older PC which came with Win 7. Have you ever clean installed Win 10 on it?

• AMD Athlon II X2 255 Dual Core Processor
• Windows 7 Professional
• 2GB DDR3 RAM
• 320GB HDD
• DVD Rewriter
• Integrated Graphics
• PS.VB1E3.082

We can only proceed step by step.

So chkdsk and SFC /Scannow are ok. But any attempt to reset your PC or run DISM fails.

Is this what you tried? I'm not 100% clear what the above means. Clean install or this procedure?
Repair Install Windows 10 with an In-place Upgrade - Windows 10 Forums

If you tried this, it's possible it failed as you need (it seems) some 500Mb of unallocated space on your hard disk.

 

Windows 10 infinite restart black screen


The tutorials provided are just a list of troubleshooting steps. Use only the steps which apply to you.

Since none of the troubleshooting steps here worked, I'd suggest you do a Clean install.

John