URGENT PLEASE HELP! So many data errors on boot scan???

Hi, my laptop was running so slow and decided to do a boot scan to see if anything was wrong. For about 5 hours now its been stuck on 42% and lots of data errors is popping up from all different place/files on my computer. I literally got my laptop fixed 2 weeks ago and don’t understand what this means! Are they all viruses? Is my laptop completely broke? What will happen to my personal files?
I’m using windows 7.

Thanks

can you give a example…or post a screenshot

It won’t let me upload a photo from my iPhone but one says
File c:\windows\rescache\rc0005\rescache.hit error 0xc000003E {data error}
Also lots of temporary files and from home\appdata etc

Thanks

as long as it does not say infected and give a malwarename it is not a virus detection

So what does all these data errors mean? Can I fix them?
Thanks

avast is a virus program, and will only take action on infected files

but the scan result will also show scan errors and the reason why…

take a screenshot and attach when the scan is done, then maybe we can give more info

Ok will do, thanks