As explained in
Clean Reinstall - Factory OEM Windows 7 in the Special Note for Dell Owners, when you clean reinstall to C it destroys the bootable hotlink to Factory Recovery.
There are two ways you can try to restore the link to Recovery now: try
restoring Dell Recovery Partition F8 link or if you need to boot Recovery you can try to B
oot Recovery Partition using EasyBCD.
I see two other things about your HD:
You have abandoned the 100mb System Reserved partition with the boot files being written onto C during reinstall. This may interfere with being able to restore the Dell Recovery hotlink to F8 Advanced Boot Tools menu - in fact you may have lost that menu as a result, so test it now. If so you can restore SysReserved by marking it Active in Disk Mgmt, then run
Startup Repair - Run 3 Separate Times.
You also deleted your Dell Diagnostics Tools partition so it cannot run from boot via F12 as it still will normally do after a Clean Reinstall. This can be run manually from it's download at
Dell DIagnostics downoad following
Dell Diagnostics Utility - How to Run the.
Since you clean reinstalled you likely don't want the Dell bloatware anyway so after setting up your Clean reinstall following the steps remaining in the tutorial, we can help you delete and recover the space for Recovery and/or System Reserved using
Partition Wizard Resize Partition - Video Help.
Or after studying the reinstall tutorial steps you may decide you'd like to start fresh by deleting the first three partitions during reinstall, create a new one there to get a perfect reinstall.