My Acer laptop restarting too long

This is a hairy situation.

1. Forcibly putting the laptop off may cause MBR to become corrupted, personally me, once this happened to me I took the risk and forced it off and entered and tried booting into safe mode which worked. From there you wanna run chkdsk command from CMD as administrator and see if any errors found and pay attention to chkdsk report of any bad secotrs, if there are none its a good sign that its some windows update, malware etc that has corrupted windows files. At this point if errors continue pop up some days later even though no bad sectors etc then you need to do a proper virus and malware scan. Use malwarebytes free for malware and update your virus software and do a scan separately and if both malwarebytes and your antivirus simultaneously find a virus dont attempt to repair with both of them at the same only use one or risk causing more issues. If you attempt this step of forcing the laptop off and successfully enter safe mode then you can try the above tips.

2. If you fail to enter safe mode, then its time to check the air vents and remove dust and check thermal paste of the cpu. If still the laptop fails to boot successfully then remove the hdd and install in external HDD case and hook up to another pc and remove important files, pictures etc. Then attempt from the pc to do a chkdsk of the laptop hard drive and pay attention if any bad sectors found, if there are bad sectors best to immediately check you have all your files, then download License Crawler, this will find the serial keys of any of legally bought softwares and windows keys and back this up. Try more than one product key finder.

3. If there are no bad sectors then use malwarebytes and antivirus, rogue killer, etc and scan the you laptop hdd that is installed as storage drive to another pc via external hdd case. Once you have removed all threats then attempt chkdsk fix on the drive and repair your hdd.