Something doesn't sound right.
First, erasing a partition content (or wiping it) doesn't mean you erased the "partition" itself. To be clear, the partition could be full of zeroes for example (no data at all), but the partition is shown in a partition manager tool. That's fine for what you are trying to achieve.
the content or the container (or both) of the C: partition was erased, then the MBR itself was not
If this is the case, and if you had (?) a virus in the actual MBR, then it is still there.
OTOH, if the virus was in the partition boot record or in any other sector of the C: partition (not in the MBR), then the virus is gone.
If the MBR was not
erased, then the options to boot to the recovery partition should be still there. What is not there anymore, if the C: partition was erased, is the boot record to normally boot to the Windows C: partition.
The very first option should be: search for downloads and support at Dell's website.
Second option: contact Dell directly and ask them about starting the recovery partition when your Windows partition was erased.
Installing a regular Windows installation is not
going to give you access to the special recovery partition in a way that you could use the recovery options.
You still could try several possibilities. For any tests/checks/installations, you should have firstly your computer powered down, not connected to any dock station, disconnect any peripheral device (externals mouse, keyboard, monitor, printer, camera, usb devices...), disconnect any cable (like ethernet or usb for example) except the AC power cable.
Use your laptop connected to the AC power cord, not only with batteries, and do not disconnect it until you finish installing/testing/checking.
From the current state (system powered down completely, no sleep/hibernate modes), power on your system.
A) When the Dell logo appears, press <F8> several times until the Advanced Boot Options menu appears. I can't know if it will appear or not. If it does, select the appropriate recovery/repair option to reinstall Windows from the special recovery partition.Alternatively
, if that possibility doesn't work at all, then
B) Immediately when the Dell logo appears, press the <F12> key. Select "Diagnostics" from the boot menu; or any option you think fits your problem.
C) After the computer has been powered down (leave it at least a couple of minutes powered down), press and hold the <Fn> key while powering your computer on (first press <Fn>, hold it, and then press the <Power> button).
In any case, be patient, wait until the tests are finished, write down any messages, and read carefully each and every instruction on your screen.
Once again, the best suggestion is to contact Dell and simultaneously download the correct manual and search for available software at Dell site.
works, and after reading guides, manuals, and specially looking for help from Dell, maybe
changing the recovery partition to be the Bootable/Active/Unhidden partition using the tools included in UBCD could solve the problem. But I can't tell you what should happen if you finally choose this option (and you are the only responsible if you do).
Beware!!! If you select the special recovery partition as Bootable/Active/Unhidden, there is always a chance that after rebooting a couple of times trying to install Windows you could actually - by mistake - overwrite that special recovery partition instead of installing Windows to the C: (currently "erased") partition. So you need to know what you are doing, and pay attention to the "partition" (or empty space) where Windows would be installed to.