Slow to start up

Save a backup image so you can start over if necessary: Backup Complete Computer - Create an Image Backup

I linked the ISO (image) file for the latest Win7 installer to download and burn to DVD or write to flash stick with the Download tool. Then follow the steps for Reinstalling Windows 7, ask back if you have any more questions.

Also remember to make your Recovery Disks so you have a path back to factory condition if you ever need it and the Recovery partition fails to run at boot using it's hotkey. This gives you two backup methods - the image and Recov Disks.

Please fill in your System Specs.

Correct. A restore from an image will always set your system back to the time the image was taken - and also your data if it was in the C: partition. That is why we recommend to store your data in a separate partition - separate from the OS partition. Then you can backup and restore dependently.

Note however, if you restore your system from a restore point (shadow), the use data will not be effected or changed.

Did you run Soluto to find out which processes are holding you up?

And with what instructions do you have difficulties.

download speccy and take a screen shot. Or type what it says and it should look something similar to this expect with your specs
Speccy - System Information - Free Download