How do i switch a dell inspiron with a broken screen to a vga monitor?

SOURCE: How do I add a dell external monitor to a dell inspiron 9400

Simply use the external video port. It may require an adapter depending on the monitor you plan to use.

SOURCE: Dell Inspiron 1501 laptop screen will not work.

If you hear the hard drive spinning and you think Windows is working but you can't see an image then :-
You could have a defective screen - a defective inverter or a CCFL lamp or simply the video cable needs reseating. After reseating the video cable and the problem is still there then :-
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

• Screen flashs on red/pink and off.
• Picture stays on in red and slowly be come normal.
• Picture flickering with dim display or appear black.
• Picture flickering on and off.

SOURCE: Monitor not working on Dell Inspiron laptop. Inspiron 1501 laptop

just follow the given link ur problem will bw solved
http://www.experts-exchange.com/Hardware/Q_21896519.html

SOURCE: Dell Inspiron 1545 Broken Screen?

The LCD is definitely shattered, looks like pressure was applied from the back of the screen (Pressed on, laid on etc) and the LCD will need to be replaced.
Several are available on Ebay
http://shop.ebay.com/?_from=R40&_trksid=p3907.m38.l1313&_nkw=Inspiron+1545+LCD&_sacat=See-All-Categories
Service instructions are here
http://support.dell.com/support/edocs/systems/ins1545/en/SM/display.htm#wp1183775

Testimonial: "Thank you for your quick response, Dageezer. Yes, I'll look at ebay/Amazon for a replacement screen."

SOURCE: laptop dell inspiron 1545 no power up

Hello anourkhader

When was the last time you used it, and were there any problems? To find the solution to this problem is a matter of elimination. You should check the following:

Step 1 - Power

- Try an alternative power adapter
- Try plugging in your laptop to an alternative power supply

WARNING - BEFORE PROCEEDING, PLEASE FOLLOW THE FOLLOWING SAFETY PRECAUTIONS!

1. REMOVE THE POWER ADAPTER FROM YOUR LAPTOP
2. REMOVE ALL PERIPHERALS
3. WEAR A WRIST-GROUNDING STRAP, AND CONNECT IT TO AN UNPAINTED, METAL SURFACE. IF ONE IS NOT AVAILABLE, TOUCH AN UNPAINTED METAL SURFACE TO DISCHARGE ANY STATIC FROM YOUR BODY

Step 2 - Remove and reset basic hardware items

Remove and reseat the items mentioned below in the order they're mentioned:

- AC adapter
- Battery
- Memory
- Hard drive

For instructions on how to do this, please refer to your user manual. If you no longer have it, you can download it from here: http://support.dell.com/support/edocs/systems/ins1545/

If after following the above instructions, your laptop still doesn't turn on, I would recommend that you contact Dell customer support, which you can do by following this link: http://support.dell.com/support/topics/global.aspx/support/dellcare/contact_technical_support?

I hope this helps. Please feel free to contact me if you require further assistance.

ajblaj