How to convert a non-bootable Win7 USB BOOTABLE

Downloaded an (PC COE) OS image (Windows 7 - 64 bit) for specific laptop model(HP elitebook folio) to USB media which wasn't bootable

Using Imgburn, follow the steps below

As an example, making use of files copied from the non bootable USB media in the source folder

Destination folder and file name

To make the non-bootable usb image bootable use the etfsboot.com in the advanced tab -->Boot Image

Build

Using imgburn software made a non-bootable iso image of the non bootable files downloaded in USB

Imgburn can detect whether its a bootable or non bootable image
In write mode, select the iso images

To write the bootable iso to USB, used rufus , imgburn can also to used to create a bootable usb

ref:- https://mindthebandgap.wordpress.com/2013/03/13/how-to-convert-bootable-usb-into-an-iso-file/

Resolving the Deskjet F4488 Errr

The mere display of "E" caused me quite a discomfort only to realize latter that it was my own fault/careless approach. Just a look at the manual caused the error to vanish.
RTFM is the ultimate guide.
Steps that I carried out (power button light blinks all the way to step 8)
1. Without connecting the USB connect the power .
2. press the power on button
3. Place the paper in the tray.
4. open the cartridge door (the power is on), this brings the cartridge holder in the middle automatically.
5. Place the cartridge
6. Close cartridge door, wait for alignment page to print.
7. Open scanner lid. Place alignment page face down.
8. Close lid. Press scan button. Wait until power on button light stops blinking, this means the alignment has been completed. Completing the alignment ensures better print quality.
**Everytime a new cartridge is inserted it prints the alignment page and it should be allowed to carry out the task 8 so that the alignment is carried out properly**

ref:- HP manual