> For the complete documentation index, see [llms.txt](https://knowledge.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.illumina.com/instrumentation/miseq-ruo/instrumentation-miseq-ruo-troubleshooting-list/000001658.md).
# How to access Windows on the MiSeq if there is black screen at boot up
If the MiSeq Control Software (MCS) does not launch at boot and a **black screen** is displayed, but the mouse is working, follow the steps below.
a. Press CTRL+ALT+DEL and open the **Task Manager**.
b. Select **New Task**.
c. Enter "explorer" into the text box and select **OK**.
d. Windows Explorer will boot up and bring you to the Windows desktop.\
e. **Launch** MCS by double-clicking the MiSeq Control Software icon on the desktop.\
f. If MCS stalls or initialization fails:
* **Quit** MCS if you have an error by acknowledging the error and closing the software.
* **Navigate** to D:\Illumina Maintenance Logs.
* **Rename** the "WashLog.xml" file to "WashLog\_archive.xml".
* **Re-launch** the MCS from the desktop.
If the issue still persists, contact [Illumina Technical Support](https://www.illumina.com/company/contact-us.html#/united-states/technical-support) for further assistance.
**Note:** If the message appears that "there is another application open," see the steps below to terminate duplicate instances of MCS.
a. In **Task Manager**, select the **Processes** tab.
b. If "MiSeqSoftware.exe" is listed, **highlight** and select "**End Process**"
c. When prompted to confirm, select **End Process**.
d. Re-attempt launch of MCS from the desktop by double-clicking the MCS icon.
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| *For any feedback or questions regarding this article (Illumina Knowledge Article #1658), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000001658%20-%20Instrumentation%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |
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