Windows 7: Windows update , changed from automatic, serious problems

I am having serious issues with my gaming computer. It all started when i was due for a windows 7 update but my computer failed to do this update and from then on my computer would try to install the update everytime it started. It woild always fail and took my pc about 20 mins to fully launch and compared to the usuall 5 mins. I ignored this issue until about a month later when i had enough, i went to my control panel and stopped windows from automatically updating . This has given me serious issues and now i cannot complete simple tasks without the application stopping responding or freezing my computer completely. Also i can only shut my computer down by pressing the power buttom on the case as otherwise it goes through the normal process but then leaves me with a black screen and just my cursor. I cannot change my windows update back to automatically update as my control panel will just become iresponsive. I have have a copy of windows 10 preordered and i thought a clean wipe and a new update could fix my issues however i cannot go through the process without it becoming iresponsive. Please help asap , many thanks , Jack

Hi Jack,
IF you want W10 follow this link
Windows 10 - Clean Install - Windows 10 Forums

From what you have said it sounds more like malware.
As you have a custom build
Just use your original Retail install disks to re-install W7.

Roy

Ok thanks i will scan for malware and try a win 10 installation but i am planing on taking it to a pc shop tommorow anyway