BOOTMGR is missing or edit windows boot options while try 2 INSTALL 7

Windows 7 Home Premium 64bit. Gateway desktop all-in-one model zx4951. Recovery media not made by owner 2 years ago when purchased. I tried to make the recovery discs but the program wont launch, it's probably corrupted. I couldn't open some other files, has some corrupted files, Trojans, and lots of malware. Backed up all personal files (at least one file in every photo folder was corrupted).
Began reinstall from recovery partition (Alt-F10). When it comes up it says to WAIT and I have waited for 3 hours. Turn off computer. Decided to reinstall Windows 7HP64 using my retail UPGRADE disc. It WAS stalling at SETUP (waited 2 hours). Turned it off. Tried to repair with that disc, stalls at SETUP after I click the language and keyboard.
Tried repairing windows with that 7HP64 disc...stalls in the same place.
So...I tried to install Windows 7HP 32bit because I have that disc as well...NOW I am getting BOOTMGR is missing. But I am trying to INSTALL. So I decided to use an external cd/dvd and I get the same thing.
WHY WONT IT ALLOW ME TO INSTALL? This computer IS a touchscreen. Cant see why that would matter, but I guess at this point I am out of ideas.
I also went into BIOS (the only thing I CAN access) and disabled usb, audio, and lan controllers but that didn't work either so I reset the defaults. The drive is not making any unusual noise and the system is not running hot.
I am at the end of my rope/ideas.
I hope someone can help me reinstall Windows 7HP64 on this system. Thanks for reading.

Thank you I am going to try that. Loading an iso to an 8gb flash drive now. Will update soon. Thank you for helping me.

Be sure to delete all partitions during install using the Drive Options from Steps 7 and 8 of Clean Install Windows 7.

If you use the flash installer, set HDD first to boot in BIOS setup, then trigger stick using one-time BIOS Boot menu key given on first screen.

It sounds like your disk wasn't booting if you were getting that error.

If you have any further problems wipe the HD first using Diskpart Clean Command

Thank you for the tips. I just finished creating the bootable flash. We are having bad weather and I don't want to start installing since the power has blinked already a few times. Going to wait till tomorrow to get started. But I will post back to say that it worked and all is well :). I sincerely thank you for your help and your time. Back at it tomorrow.

After an hour of waiting on "Setup is starting" (from usb boot) with a circling cursor and no apparent hard drive activity, I give up. But this system will not give me access to startup repair. It loads the window asking if you want to install or repair. I click repair and the System Recover Options windows comes up with the circling cursor but it goes no further. And no operating system is in the list of OS. The RESTORE YOUR COMPUTER FROM AN IMAGE you created is checked so I cannot click LOAD DRIVERS. Even if the USE RECOVEY TOOLS was checked I cannot click LOAD DRIVERS because of the circling cursor...it's as though the system is doing something but it's not. Same as all previous attempts to reinstall or repair. HOW TO I WIPE this drive and reinstall Windows 7? I have never seen this before. Need the old Dos! HELP PLEASE

I decided to try to access the recovery partition using a Vista 64 dvd. Got further than using the W7 disc. It is asking me to locate the SETUP files, so at this point I switched the disc from the Vista disc to the W7 disc. Then it finally does load items found in COMPUTER. Drive C marked as ACER, Drive D marked as "local disk" Drive P marked as PQ service (office I think) and BOOT (X). Also it shows the (E) where the W7 disc is. If I select C it says there are no files. If I select D it gives me Programs...I NEED HELP ANSWERING THIS QUESTION. Where are the files it wants? It is asking for me to "Select the installation media for the device and click ok to select driver.

The issue is never a driver. That error means the installer is bad. Write a confirmed ISO from Step 1 in Clean Reinstall - Factory OEM Windows 7 to flash stick using the tool in Step 2, or UltraISO Software To Create Bootable USB Flash Drive. Be sure to Format first, before Write.

To access the Command Line to wipe with Diskpart Clean Command you'll tick System Recovery Options and not Restore from an Image.

If problems persists test the HD with the maker's HD Diagnostic extended CD scan.

Well Vista installed normally. Now do I have to activate it before attempting to install Windows 7HP64 upgrade? I think not..Windows 7 is installing...