Windows 7: Repair Install Needed but No Discs?

I use Advanced SystemCare, CCleaner and MBAM to scan / remove issues on my laptop about once a week.

About a year ago I downloaded a similar program from CNet Downloads and ran a scan / clean. However, a few days later I noticed I get errors for example when right clicking on the desktop and clicking 'personalise', I now get an error - 'explorer.exe no such interface supported' and similar issues like when in 'Control Panel\System and Security' if I click a sub-category nothing will happen.

These errors don't have any effect on my laptop for daily tasks, but 'niggle' at me now and again.

I don't have my Windows 7 disks with me, their at my house some 200 odd miles away (not going back for a while), but was wondering if there was a way to repair my system without the disks?

64bit home premium. what language?

Official Windows 7 SP1 ISO from Digital River « My Digital Life

You can download an ISO of your particular Windows version and burn it to a disk to make an install disc.

Try to restrain yourself on those optimization and cleaner programs.

Thanks for the response. Sorry if I've missed something technical, but english?

Windows 7 Home Premium SP1-U ISO
English x64: X17-58997.iso

source Official Windows 7 SP1 ISO from Digital River « My Digital Life

How to do a repair install in windows 7: Repair Install
Read carefully!

Brilliant, I'll have a go at that tonight.

Yes lesson learnt on the optimization and cleaner programs! haha

Nice one! Thanks for all the links, they'll come in very useful, not done a repair install before so hopefully I can't go to far wrong with the links. Just so I'm sure doing a repair install like this won't affect any of my programs / documents etc. will it? Best to backup in any case I suppose.

How to do a repair install in windows 7: Repair Install
this will answer everything

Definitely.