Windows won't load

The Acer Aspire One is a netbook, not a laptop.
A netbook is a smaller, scaled-down version of a laptop. It does not have the memory capacity or graphics of a regular laptop.
It also lacks a CD drive, which means you cannot restore the Acer Aspire One with restore discs. Instead, the netbook has a built-in factory restore feature.
You can reset the Acer Aspire One to factory settings just using your keyboard.
Only restore your netbook to factory settings if you cannot fix the problem any other way.
Save any files or folders on your Acer Aspire One with flash drives.
Drag and drop files onto the icon of your flash drive.
Go to Start > Restart to reboot your netbook.

Hold down Alt and F10 when you see the Acer logo on the screen.
The recovery menu will load.
Hit Enter and then Next to see your recovery options.
Choose Factory Restore to set your netbook back to factory settings.
Follow the instructions on the screen.
Choose your time zone and language when the customization menu appears.
Reboot the netbook when you are prompted.
Restore your saved files from the flash drive.
or
When a vital file becomes corrupted, it might be necessary to restore a computer to its original factory settings.
This process also cleans up the hard drive and removes old programs that can make a computer slow and unresponsive.
But, because restoration wipes away all files you have installed or created, it should be a last-ditch effort in trying to repair a computer.
If you have reached this point with your Acer laptop or desktop, the manufacturer provides a utility to restore the factory settings.

Open the Windows Start menu by clicking on the icon in the lower left corner of your desktop.
Click All Programs, then the Acer folder.

Select Acer eRecovery Management to open the utility.
If a Windows prompt asks for permission to run the program, click Yes.

Click the Restore button in the pane on the left side of the program window.
Click Completely Restore System to Factory Defaults.
Select the Yes option in the dialog box that asks you to confirm the action, and click Start.
Click OK in the second confirmation dialog box to restart the computer.
Click Next in the warning window that appears after the computer reboots.
This confirms that you realize restoring the computer deletes any data stored on your hard drive.

Click Next again in the Restore Destination window, and click OK in the popup that gives you one last warning about deleting your data.
The restoration process will begin.

Click OK when the utility lets you know that the restoration is complete.
The computer will restart, and Windows will finish the recovery process.

http://acer.custhelp.com/app/answers/detail/a_id/12869/kw/factory settings/related/1

Restart your computer repeatedly tapping the f8 key to enter safe mode while the screen is black once in safe mode where the only things working will be your keyboard and mouse allowing you to attempt to repair your computer. Use the system restore to restore your system to an earlier time click start all programs accessories system tools you should see your system restore option if it is a hardware issue the system restore might not work Manual restore points that you specify with the System. Configuration utility Installation restore points that occur before you install a program or a service you can use the system checkpoints or the installation restore points to restore your computer's settings to a date when it operated correctly. This may also help determine the cause of the configuration error.

To perform a system restore, follow these steps: 1.Click Start, click Run, type msconfig, and then click OK. 2.On the General tab, click Launch System Restore. 3.Select Restore my computer to an earlier time, and then click Next. 4.Calendar dates in bold are possible restore points. Click the most recent one to view system restore information. 5.Select a system checkpoint or an installation restore point, and then click Next. 6.Close all other programs. 7.To start the system restore, click Next. 8.Your computer restarts. Repeat steps 1 through 8 until you fix your configuration issue. if this hails to fix the problem http://support.microsoft.com/kb/307545/ restart your computer repeatedly tapping the f8 key to enter safe mode while the screen is black once in safe mode where the only things working will be your keyboard and mouse allowing you to attempt to repair your computer Windows Advanced Options Menu Please select an option: Safe Mode
Safe Mode with Networking
Safe Mode with Command Prompt Enable Boot Logging
Enable VGA mode
Last Known Good Configuration (your most recent settings that worked)
Directory Services Restore Mode (Windows domain controllers only)
Debugging Mode Start Windows Normally
Reboot
Return to OS Choices Menu Use the up and down arrow keys to move the highlight to your choice Select safe mode with networking to download you could select the option start with command prompt you should be in DOS mode black screen type chkdsk/r/f which will scan for and attempt recovery any bad sectors and automatically fix any corrupt files on your hard drive you should have no input while chkdsk utility is in progress any input might further damage your hard drive

If you still have the disk for your OS then the process is fairly simple. Insert the disc and reboot the computer. While the computer is booting hold down ESC or possibly F2, F8, or F12. A boot menu should open up before your operating system begins to load and you should pick to boot from CD Drive. When the setup loads, go through the menus until you get to the section of where to install the OS. Delete all the partitions on your computer and then reinstall the OS on the new one. This will delete everything on your laptop and just have a clean copy of your OS.

If you don't have the original CD you can download and burn this onto a CD and boot it from CD. This will securely wipe your hard drive.

I suggest going to the Acer Aspire website, downloading the drivers and transferring them over to your laptop using a USB drive. Once you get the network drivers installed, you can begin re-acquiring all the software that you lost due to your reinstall.

remove all dervices, pci cards, modem card, usb devices ect... except for the hard drive, the cd/dvd drive and video card, if applicable. go into bios (by holding down f1, f2, f10, or delete before windows starts to load. try each, for different computers use different buttons) and disable the sould card, modem/network card, if integrated, and any integrated components which are not absolutely necessary to boot.

try to boot. if that does not work, try using 1 stick of ram at a time, and try each stick,1 at a time until it boots.

if your computer boots when stripped down, then try reinstalling/reenablind each device, 1 at a time, until you find the device that is keeping it from booting.

if your computer will not boot when stripped down, you need a new motherboard.

If you have a flash drive available try downloading Mozzilla Firefox onto it from another computer from this site: http://download.cnet.com/mozilla-firefox/?tag=mncol
Load it onto your computer and see if that will get your internet going. I had the same problem and tried this, and wouldn't you know it, I like Firefox better anyway!

This might happen if you install McAfee with applications running, or not restarting Windows, etc. I am not sure why you couldn't boot in Safemode, booting in safemode is exactly what you need to do to uninstall McAfee.

YOU NEED TO DOWN LOAD THIS PROGRAM FROM MICROSOFT.

WWW.WINDRIVERS.COM/HAL.DLL
OR
WWW.WINDRIVERS.COM/SYSTEM32/HAL.DLL

ONLINE ADDRESS BAR: WINDOW DRIVERS FOR SYSTEM32\HAL.DLL

OR FIND THE FILE IN THE ORIGINAL SOFTWARE YOU INSTALLED THE WINDOWS VERSION ONTO THE SYSTEM

ROD

try shutting down, removing and reinsert the battery, and resarting then. if this dosen't work, you may need to reinstall your O/S.

Are you able to restore the computer if so that may be your problem. By the way you have explained it seems like a software problem and not a hardware one.