Under an administrator account in Windows 7 go into msconfig and uncheck the following from the startup tab:
1.) Ok, uncheck the following:
-Dell system detect <-----I would actually recommend uninstalling this. No reason for it.
-Advanced system care 6. <-----I would actually recommend uninstalling this. No reason for it.
I notice you are using IOBIT software.
From a
cnet review:
"One minor issue we had with Malware Fighter was that it classifies the absence of Advanced SystemCare and Smart Defrag as "problems." There's no option to clear out these warnings, and choosing to fix them results in an automatic download and installation of IObit's other product offerings"
Replace with CCleaner if you must have a cleaner. Better utility, and best of all, does not take system resources unless you run it. It does not keep itself running.
Windows 7 does not need a cleaner. It handles a lot of things just fine by itself.
CCleaner is only recommended occasionally unless your system is really crawling.
-Adobe reader and acrobat manager. <-----It already runs as a service that helps auto update the program. This is not needed.
-Apple push
-Itunes (Anything with apple, uncheck. Or better yet, uninstall it. It is a known massive resource hog on windows. You do not need itunes on your pc to update or sync your apple products anymore, so this is basically completely pointless. Unless you like the media player built in, but I would just use windows media player or other software.)
Apple stuff to uninstall:
Bonjour
Apple software update
Safari
Quicktime
Itunes
Click ok, and then hit restart. After it boots up, msconfig will prompt again. Check the box and say ok so that msconfig does not run on startup every time.
You should notice a huge improvement in start up time on the second or third restart.
If not, some programs see themselves removed from startup and re-add themselves.
If boot up is still slow, check msconfig and see if they reactivated themselves. If they do, I don't trust the software. If I block them from start, they should stay blocked. To me this is risky behavior.
(Exception of course would be threat removal/antimalware programs. Antivirus etc.)
2.) Also could you check something else for me?
Go to

rb:-type performance in the search box. Click performance information and tools. Click advanced tools on the left hand side. Under performance issues does it list anything there?
If it says no issues found that's great, if things are listed there show me a screenshot of what it found, or tell me what was listed.
3.) Also, please take a look
here for suggestions on maintaining windows.
Have you done a
defrag in awhile? Windows does it automatically at 3am, but if your computer is not on at this time it will not be done. You can configure that in disk defrag.
Do not defrag if you have a solid state drive. (SSD)
If you need any more help, please ask. Let me know how it goes!